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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 171 (2.4L - DTCS P1621 To U1418) >> DTC Troubleshooting >> U0155-Lost Communication With Cluster/CCN >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Journey and 2015 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC 

NOTE:

For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.

  1. Turn the ignition on.
  2. With the scan tool, read DTCs and record on the repair order.

    Is the DTC active or pending?

    Yes 

    No 

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